1979578 has 8 divisors (see below), whose sum is σ = 2976372. Its totient is φ = 987456.

The previous prime is 1979573. The next prime is 1979581. The reversal of 1979578 is 8759791.

It can be written as a sum of positive squares in 2 ways, for example, as 1868689 + 110889 = 1367^2 + 333^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1979573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226 + ... + 2002.

2^1979578 is an apocalyptic number.

1979578 is a deficient number, since it is larger than the sum of its proper divisors (996794).

1979578 is a wasteful number, since it uses less digits than its factorization.

1979578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336.

The product of its digits is 158760, while the sum is 46.

The square root of 1979578 is about 1406.9747687859. The cubic root of 1979578 is about 125.5618019128.

It can be divided in two parts, 19 and 79578, that added together give a palindrome (79597).

The spelling of 1979578 in words is "one million, nine hundred seventy-nine thousand, five hundred seventy-eight".